Toilet brush with self-locking function

Abstract

This utility model belongs to the field of toilet brush technology, and particularly relates to a toilet brush with a self-locking function. A toilet brush with a self-locking function includes a handle and a brush head; a push rod slides inside the handle, with a clamp at the front end and a sliding button connected to the rear end; the clamp is equipped with an elastic reset element; the sliding button is linked to the push rod to drive the push rod to move, thereby clamping or releasing the clamp; a self-locking structure is provided between the handle and the push rod to lock the axial position of the push rod when the clamp is in the clamped position; the self-locking structure includes a limiting spring piece fixed to the push rod and having a self-locking surface; a limiting protrusion fixed to the inner wall of the handle and having an abutment surface, wherein when the clamp is in the clamped position, the self-locking surface abuts against the abutment surface to prevent the push rod from moving in the releasing direction; the sliding button has a squeezing protrusion for unlocking the self-locking surface and the abutment surface. This utility model has the advantage of a self-locking function, ensuring that the brush head is difficult to loosen during use.

Description

Technical Field

[0001] This utility model belongs to the field of toilet brush technology, and in particular relates to a toilet brush with a self-locking function. Background Technology

[0002] A toilet brush is a tool used to clean toilet stains, effectively keeping the toilet clean and preventing odors. However, after cleaning the toilet, some dirt often remains on the brush head, which is difficult to remove and can easily breed bacteria and produce odors over time. Some toilet brushes have a handle and brush head that are molded as a single piece, which means that after long-term use, the entire toilet brush must be discarded, which is wasteful.

[0003] Some toilet brushes on the market have detachable brush heads, with a sliding button on the handle and a push rod inside the sliding rod that is linked to the button. The end of the push rod is fitted with a clamp. Users move the push rod axially by pushing the button, thus opening or closing the clamp on the brush head. However, during brushing, the brush head experiences multi-directional reaction forces from the toilet wall. This force is directly transmitted to the clamp and push rod, overcoming their original positioning friction or locking force, causing the push rod to unexpectedly retract, the clamping function to fail, and the brush head to loosen during use. Utility Model Content

[0004] To address the shortcomings of existing technologies, a toilet brush with a self-locking function is provided to ensure that the brush head is difficult to loosen during use.

[0005] This utility model is achieved by the following technical solution: a toilet brush with a self-locking function, including a handle and a detachable brush head;

[0006] A push rod is slidably disposed inside the handle. The front end of the push rod is provided with a clamp for holding the brush head, and the rear end is connected to a sliding button. The push rod is equipped with an elastic reset component that realizes the push rod reset and the clamp clamps at the same time.

[0007] The sliding button is linked to the push rod and is used to drive the push rod to move along its axial direction so that the chuck switches between a clamping position and a releasing position.

[0008] A self-locking structure is provided between the handle and the push rod, which is used to lock the axial position of the push rod when the chuck is in the clamping position;

[0009] The self-locking structure includes:

[0010] A limiting spring sheet fixed to the push rod, the limiting spring sheet having a self-locking surface;

[0011] A limiting protrusion fixed to the inner wall of the handle, the limiting protrusion having an abutment surface that mates with the self-locking surface;

[0012] When the chuck is in the clamping position, the self-locking surface abuts against the abutting surface to prevent the push rod from moving in the releasing direction;

[0013] The slider is provided with a pressing protrusion. When the slider is operated to move in the unlocking direction, the pressing protrusion presses the limiting spring to deform it elastically, thereby causing the self-locking surface to disengage from the abutment surface.

[0014] Unlocking and Replacement: When it is time to replace the brush head, the user pushes the sliding button along the handle axis. The pressing protrusion of the sliding button first presses the limiting spring, causing it to deform elastically, resulting in the self-locking surface fixed on the push rod disengaging from the abutment surface fixed inside the handle. At this time, the self-locking structure releases the lock on the push rod. The user continues to push the sliding button, which moves the push rod together in the unlocking direction, causing the front clamp to open. At this point, the user can remove the old brush head or install a new brush head.

[0015] Locking and Resetting: After replacement, the user releases the sliding button. Under the restoring force of the elastic reset component, the push rod automatically moves back to the clamping direction. When it resets to the clamping position, the rebound force of the limiting spring causes its self-locking surface to re-engage tightly with the abutment surface on the handle, thereby locking the push rod in that position again and preventing the push rod from moving accidentally or the brush head from becoming loose due to external impact during use.

[0016] A self-locking structure consisting of a limiting spring and a limiting protrusion is incorporated between the handle and the push rod. When the brush head is in the clamped working state, the self-locking surface and the contact surface abut against each other, forming a mechanical lock. This structure effectively resists the reverse impact force on the brush head during cleaning, preventing this external force from being transmitted to the push rod and causing it to accidentally retract, thus ensuring the connection's firmness and reliability during use. Furthermore, when replacing the brush head, the user only needs to push the sliding button in one direction; its squeezing protrusion will squeeze the limiting spring to release the self-locking mechanism, simultaneously moving the push rod to loosen the brush head. The operation is simple and seamless. After replacement, simply releasing the sliding button will automatically reset the push rod under the action of the elastic reset component, and the self-locking structure will simultaneously return to its locked state.

[0017] Preferably, both the self-locking surface and the abutting surface are planar to form a planar locking fit;

[0018] The limiting spring has an unlocking surface on the other side of the self-locking surface; the limiting protrusion has a pressing surface on the other side of the abutting surface, and the pressing surface and / or the unlocking surface are inclined surfaces.

[0019] When the push rod moves in the clamping direction under the action of the elastic reset member, the pressing surface presses against the unlocking surface, forcing the limiting spring to deform elastically, so that the self-locking surface can pass over the limiting protrusion and re-abut against the abutting surface.

[0020] The above settings facilitate automatic reset of the push rod and automatic locking of the push rod.

[0021] Preferably, the push rod has a linkage groove extending along its axial direction;

[0022] The inner side of the slider is fixed with a drive component that extends into the linkage groove;

[0023] The drive component and the linkage groove have a set fitting clearance in the axial direction of the push rod, so that the slide button has a preset free stroke relative to the push rod;

[0024] When the slider is pushed, during the idle stroke, the extrusion protrusion extrudes the limiting spring to disengage it from the self-locking state, at which time the push rod remains stationary; when the idle stroke ends, after the drive member contacts the end of the linkage groove, the slider drives the push rod to move synchronously through the drive member.

[0025] By incorporating a free-travel mechanism, users must first complete the action of "fully releasing the self-lock by squeezing the protrusion" before proceeding to the "moving push rod" stage when pushing the slider. This effectively prevents problems such as mechanism jamming, component wear, or incomplete unlocking caused by users operating too quickly or using too much force and forcibly pulling the push rod before the self-locking structure is fully disengaged.

[0026] Preferably, the handle is further provided with an elastic slider reset component, the two ends of which are fixedly connected to the slider and the handle respectively, and the slider reset component applies an elastic force to reset the slider.

[0027] The above settings are used to reset the slider.

[0028] Preferably, the end of the handle is provided with a receiving groove for accommodating the chuck, the chuck is equipped with an elastic element to open the chuck, and the push rod can operably drive the chuck to switch between an extended state and a retracted state.

[0029] When the chuck is in the retracted state, the inner wall of the receiving groove circumferentially constrains the chuck, keeping the chuck clamping the brush head.

[0030] When the chuck switches to the extended state, the chuck is at least partially released from the constraint of the inner wall of the receiving groove and opens radially under the action of the elastic element, so that the brush head can be removed or installed.

[0031] Preferably, the outer wall of the chuck includes a contact section that can contact the receiving groove and a non-contact section that does not contact the receiving groove. The contact section is disposed at the end of the chuck and protrudes outward.

[0032] When the chuck is in the retracted state, the contact section contacts the inner wall of the receiving groove to constrain the chuck and keep it in a clamped state.

[0033] When the contact section of the chuck extends fully to the outside of the receiving groove, the chuck is released from the constraint of the inner wall of the receiving groove and opens radially under the action of the elastic element.

[0034] By placing the contact section at the end of the chuck, the chuck can open more quickly when it extends.

[0035] Preferably, the outer wall of the chuck has an inwardly recessed arc-shaped transition section between the non-contact section and the contact section.

[0036] The arc-shaped transition section facilitates the contact between the chuck and the end wall of the receiving groove during retraction, thus providing a smooth guide for the chuck and effectively preventing jamming or interference between the chuck and the receiving groove port during retraction.

[0037] Preferably, the chuck includes two chucks, a first chuck and a second chuck, which have the same structure and size. Both the first chuck and the second chuck are provided with a rotating shaft and a bearing seat. The bearing seat is protruding and has a shaft hole for the rotating shaft to be inserted into, so that the first chuck and the second chuck can be closed or opened relative to each other.

[0038] The end of the push rod is provided with a mounting hole for inserting a shaft seat.

[0039] With the above configuration, the chuck consists of two identical chucks, a first chuck and a second chuck, which simplifies the manufacturing process.

[0040] Preferably, the end of the push rod is provided with a U-shaped groove that opens toward the chuck side, the tops of the first chuck and the second chuck are accommodated in the U-shaped groove, and the mounting hole is provided on the groove wall of the U-shaped groove.

[0041] The above design makes the push rod and chuck more compact in structure.

[0042] Preferably, a first sleeve protrusion is provided between the first clamp and the second clamp, and the elastic element is a spring, with both ends of the spring sleeved on the first sleeve protrusion.

[0043] The above settings are used to guide and limit the elastic element.

[0044] Compared with existing technologies, the advantages of this invention are as follows: By setting a self-locking structure consisting of a limiting spring and a limiting protrusion between the handle and the push rod, when the brush head is in the clamped working state, the self-locking surface and the contact surface abut against each other to form a mechanical lock. This structure can effectively resist the reverse impact force on the brush head during cleaning, preventing the external force from being transmitted to the push rod and causing it to accidentally retract, thus ensuring the connection firmness and reliability of the brush head during use. Simultaneously, when the user replaces the brush head, they only need to push the sliding button in one direction; the squeezing protrusion will squeeze the limiting spring to release the self-locking mechanism, and simultaneously move the push rod to loosen the brush head. The operation process is simple and smooth. After replacement, simply release the sliding button, and the push rod will automatically reset under the action of the elastic reset component, and the self-locking structure will simultaneously return to the locked state. Attached Figure Description

[0045] Figure 1 This is a structural diagram of two different toilet brush head models;

[0046] Figure 2 A schematic diagram of the handle after removing one side of the housing;

[0047] Figure 3 A schematic diagram of the handle after removing the other side of the housing;

[0048] Figure 4 This is a schematic diagram of the push rod and the clamp.

[0049] Figure 5 This is a schematic diagram of the push rod structure;

[0050] Figure 6 This is a schematic diagram of the chuck's structure;

[0051] Figure 7 This is a structural diagram of the first or second chuck;

[0052] Figure 8 This is a cross-sectional view of the chuck holding the brush head.

[0053] Figure 9 This is a cross-sectional view of the chuck when the brush head is released.

[0054] Figure 10 This is an enlarged view of the connection between the brush head and the handle.

[0055] Figure 11 This is a bottom view of the self-locking structure;

[0056] Figure 12 This is an enlarged view of the mating area between the slider and the push rod.

[0057] Figure 13 A cross-sectional view of the slider and push rod;

[0058] Figure 14 This is a cross-sectional view of the self-locking structure;

[0059] Figure 15 This is a schematic diagram of the structure of the limiting protrusion on the handle;

[0060] Figure 16 This is a schematic diagram showing the self-locking mechanism unlocking after the push rod has been moved.

[0061] Reference numerals: 1. Handle; 11. Cavity; 111. Receiving groove; 12. Sliding knob groove; 13. First abutting part; 14. Abutting block; 15. Limiting protrusion; 151. Abutting surface; 152. Extrusion surface; 2. Push rod; 21. Sliding knob; 211. Extrusion protrusion; 212. Driving component; 22. Elastic reset component; 221. Second socket protrusion; 23. Sliding knob reset component; 24. Second abutting part; 25. U-shaped groove; 26. Mounting hole; 27. Limiting spring; 271. Unlocking surface; 272. Self-locking surface; 28. Linkage groove; 3. Clamp; 31. Contact section; 32. Arc-shaped transition section; 33. Non-contact section; 34. Elastic element; 35. Hemispherical groove; 4. Brush head; 41. Connector; 51. First clamp; 52. Second clamp; 53. Shaft seat; 531. Shaft hole; 54. Rotating shaft; 55. First sleeve protrusion; 6. Brush head; 61. Connecting seat; 62. Limiting hole; 63. Limiting rib; 7. Cotton brush head. Detailed Implementation

[0062] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0063] like Figure 1 As shown, this embodiment discloses a toilet brush with a self-locking function, including a handle 1 and a brush head 4. The brush head 4 can be an existing sponge brush head 7 or an existing bristle brush head 6. The sponge brush head 7 and the bristle brush head 6 have a universal connector 41, which can be clamped by a clamp 3 on the handle 1. The connector 41 includes a neck and a head. The neck extends along the axial direction of the brush head 4, and the head is spherical. The end of the handle 1 is provided with a clamp 3, which has a hemispherical groove 35 for clamping the head.

[0064] like Figure 2 and Figure 3As shown, the handle 1 is formed by joining two housings using conventional methods. A hollow cavity 11 is formed within the handle 1. Several plastic parts are disposed inside the cavity 11 of the handle 1, forming guide grooves extending along the length of the handle 1. A push rod 2 is slidably fitted within these guide grooves. A sliding button 21 is provided at the tail end of the push rod 2. A sliding button groove 12 is provided on the handle 1 at the position corresponding to the sliding button 21, penetrating its wall to accommodate the sliding button 21. The user can push the sliding button 21 to achieve axial movement of the push rod 2. In some other embodiments, the sliding button 21 can be configured as a button, wherein the setting method can be the mutual contact of inclined surfaces, generating displacement of the push rod 2 through compression.

[0065] The slider 21 is connected to the inner wall of the handle 1 by a slider reset member 23, which is a conventional tension spring. The reset member 23 applies an elastic force to the push rod 2, causing the push rod 2 to move inward. The push rod 2 is fitted with an elastic reset member 22 near the front end. The elastic reset member is a conventional compression spring. The handle 1 has an abutment block 14 in its cavity 11 that abuts against one end of the elastic reset member 22. The push rod 2 has a second sleeve protrusion 221 that fits onto the other end of the elastic reset member 22. The elastic reset member 22 also applies an elastic force to the push rod 2, causing the push rod 2 to move inward.

[0066] A chuck is fitted to the front end of the push rod 2, and a receiving groove 111 is provided at the front end of the handle 1. The receiving groove 111 communicates with the cavity 11. The diameter of the receiving groove 111 is smaller than the diameter of the cavity 11. However, in some other embodiments, the diameters of the cavity 11 and the receiving groove 111 may be the same. In this embodiment, the receiving groove 111 of the cavity 11 is formed by injection molding a single shell of the handle 1. In some other embodiments, the receiving groove 111 may also be formed by two shells enclosing each other.

[0067] like Figures 4 to 9 As shown, the chuck 3 is located within the receiving groove 111 of the cavity 11. The chuck 3 includes two identical structures and dimensions: a first chuck 51 and a second chuck 52. Both the first chuck 51 and the second chuck 52 are provided with a rotating shaft 54 ​​and a bearing 53. The bearing 53 protrudes and has a shaft hole 531 for inserting the rotating shaft 54, allowing the first chuck 51 and the second chuck 52 to close or open relative to each other. The end of the push rod 2 is provided with a U-shaped groove 25 that opens towards the chuck side. The tops of the first chuck 51 and the second chuck 52 are accommodated within the U-shaped groove 25. A mounting hole 26 is provided on the groove wall of the U-shaped groove 25, and the bearing 53 is installed within the mounting hole 26.

[0068] The outer wall of the chuck 3 includes a contact section 31 that contacts the receiving groove 111 of the cavity 11 and a non-contact section 33 that does not contact the cavity 11. The non-contact section 33 is vertically arranged, and the contact section 31 is located at the end of the chuck 3 and protrudes outward. The outer wall of the chuck 3 has an inwardly recessed arc-shaped transition section 32 between the non-contact section 33 and the contact section 31. The contact section 31 of the chuck 3 protrudes outward, and the maximum outer diameter formed by the contact section 31 is close to the aperture of the receiving groove 111. Therefore, when the chuck 3 is in the retracted state, the contact section 31 contacts the inner wall of the receiving groove 111 of the cavity 11 to constrain the chuck 3 to close, thereby maintaining the clamped state.

[0069] A first sleeve protrusion 55 is provided between the first clamp 51 and the second clamp 52, and an elastic element 34, which is a spring, is provided between the two first sleeve protrusions 55 to open the first clamp 51 and the second clamp 52. The two ends of the spring are sleeved on the first sleeve protrusions 55. So that when the contact section 31 of the clamp 3 is fully extended to the outside of the cavity 11, the clamp 3 is released from the constraint of the inner wall of the cavity 11 and opens radially under the action of the elastic element 34.

[0070] like Figure 3 As shown, a plastic part inside the cavity 11 of the handle 1 has a first abutment portion 13. The push rod 2 is not a rod with the same width at every point; it has wide and narrow sections with different widths. The connection between the wide and narrow sections forms a stepped structure, which forms a second abutment portion 24 for abutting against the first abutment portion 13. When the first abutment portion 13 and the second abutment portion 24 abut against each other, the push rod 2 is at its extreme position in the extended state. In some other embodiments, the same first abutment portion 13 and second abutment portion 24 may also be provided to limit the abutment of the push rod 2 at its extreme position in the retracted state. In this embodiment, since the sliding knob groove 12 can limit the sliding knob 21, it also has a limiting effect on the extreme position of the push rod 2 in the retracted state, so no additional first and second abutment portions are provided.

[0071] like Figure 10 As shown, the size of the brush head 6 is larger than that of the cotton brush head 7, so the brush head 6 will be provided with a connecting seat 61. The connecting seat 61 and the handle 1 have a circumferential anti-rotation limiting structure. The limiting structure is provided with multiple circumferentially spaced limiting holes 62 on the hole wall of the connecting seat 61, and a limiting rib 63 protruding on the outer wall of the bottom of the handle 1 and able to be inserted into a certain limiting hole 62.

[0072] like Figures 11 to 16As shown, a self-locking structure is provided between the sliding button 21 and the handle 1. The self-locking structure includes a limiting spring 27 fixed on the push rod 2. The limiting spring 27 is sheet-shaped and integrally formed with the push rod 2. The limiting spring 27 has the ability to elastically deform due to its own plastic material. The limiting spring 27 includes an unlocking surface 271 located at the rear end and a self-locking surface 272 located at the front end along the sliding direction of the push rod 2.

[0073] A limiting protrusion 15 is fixedly provided on the inner wall of the handle 1. The limiting protrusion 15 is located in the moving direction of the limiting spring 27, and the limiting protrusion 15 is provided with an abutment surface 151 located at the rear end and a pressing surface 152 located at the front end along the sliding direction of the push rod 2. The abutment surface 151 is flat and cooperates with the self-locking surface 272 to form a planar locking structure. The pressing surface 152 is inclined, which facilitates the elastic deformation of the limiting spring 27 when the unlocking surface 271 is pressed.

[0074] When the chuck 3 is in the clamping position, the self-locking surface 272 abuts against the abutting surface 151 to prevent the push rod 2 from moving in the releasing direction.

[0075] The slide button 21 has a pressing protrusion 211 extending towards the push rod 2. When the slide button 21 is operated to move in the unlocking direction, the pressing protrusion 211 presses the limiting spring 27 to cause it to deform elastically, thereby causing the self-locking surface 272 to disengage from the abutment surface 151. The part of the pressing protrusion 211 used to press the unlocking surface 271 is also a beveled structure.

[0076] When the push rod 2 moves in the clamping direction under the action of the elastic reset member 22, the pressing surface 152 presses the unlocking surface 271, forcing the limiting spring 27 to deform elastically, so that the self-locking surface 272 can pass over the limiting protrusion 15 and re-abut against the abutting surface 151.

[0077] The push rod 2 has a linkage groove 28 extending along its axial direction. The inner side of the slide button 21 is fixed with a drive component 212 that extends into the linkage groove. The drive component 212 is cylindrical, and a bolt or screw is inserted into its lower end. The head of the bolt or screw is larger than the width of the linkage groove 28, so the drive component 212 cannot be disengaged from the linkage groove 28.

[0078] The diameter of the drive member 212 is smaller than the length of the linkage groove 28, so the drive member 212 and the linkage groove 28 have a set fitting clearance of about 4mm in the axial direction of the push rod 2, which allows the slide button 21 to have a preset free stroke relative to the push rod 2. When the slide button 21 is pushed, within the free stroke, the compression protrusion 211 compresses the limiting spring 27 to disengage it from the self-locking state, at which time the push rod 2 remains stationary; when the free stroke ends (after the drive member 212 slides 4mm), the drive member 212 contacts the end wall of the linkage groove 28, at which time the slide button 21 drives the push rod 2 to move synchronously through the drive member 212, thereby allowing the chuck to perform a release movement.

[0079] Installation of brush head 4: The user pushes the sliding button 21, causing it to press the limiting spring 27 to unlock. Then, the push rod 2 moves axially, causing the clamp 3 to extend outward from the end of the cavity 11 to a released position. At this time, the clamp 3 is released from the circumferential constraint of the inner wall of the cavity 11 and opens radially under the action of the elastic element 34. The user then aligns the opened clamp 3 with and inserts it into the connector 41 of the brush head 4. Next, the user releases the sliding button 21, and the push rod 2 resets in the opposite direction under the action of the elastic reset element 22, causing the clamp 3 to retract into the cavity 11. During the retraction process, the inner wall of the cavity 11 gradually applies radial pressure to the clamp 3, causing it to overcome the elastic force of the elastic element 34 and gradually close until it firmly clamps the connector 41 of the brush head 4. Simultaneously, the push rod 2 automatically resets to complete self-locking, thus completing the installation of the brush head 4.

[0080] Brush head 4 removal: When the brush head needs to be replaced, the user pushes the slider 21 again, repeating the above action to extend and open the clamp 3. At this time, the released brush head 4 can fall off automatically under gravity or can be easily removed. Throughout the process, the user's hands only need to touch the clean handle 1 and slider 21, without directly touching the contaminated brush head 4, thus achieving a hygienic and convenient contactless replacement.

Claims

1. A toilet brush with a self-locking function, comprising a handle and a detachable brush head, characterized in that: A push rod is slidably disposed inside the handle. The front end of the push rod is provided with a clamp for holding the brush head, and the rear end is connected to a sliding button. The push rod is equipped with an elastic reset component that realizes the push rod reset and the clamp clamps at the same time. The sliding button is linked to the push rod and is used to drive the push rod to move along its axial direction so that the chuck switches between a clamping position and a releasing position. A self-locking structure is provided between the handle and the push rod, which is used to lock the axial position of the push rod when the chuck is in the clamping position; The self-locking structure includes: A limiting spring sheet fixed to the push rod, the limiting spring sheet having a self-locking surface; A limiting protrusion fixed to the inner wall of the handle, the limiting protrusion having an abutment surface that mates with the self-locking surface; When the chuck is in the clamping position, the self-locking surface abuts against the abutting surface to prevent the push rod from moving in the releasing direction; The slider is provided with a pressing protrusion. When the slider is operated to move in the unlocking direction, the pressing protrusion presses the limiting spring to deform it elastically, thereby causing the self-locking surface to disengage from the abutment surface.

2. The toilet brush with self-locking function according to claim 1, characterized in that: Both the self-locking surface and the abutting surface are planar to form a planar locking fit; The limiting spring has an unlocking surface on the other side of the self-locking surface; the limiting protrusion has a pressing surface on the other side of the abutting surface, and the pressing surface and / or the unlocking surface are inclined surfaces. When the push rod moves in the clamping direction under the action of the elastic reset member, the pressing surface presses against the unlocking surface, forcing the limiting spring to deform elastically, so that the self-locking surface can pass over the limiting protrusion and re-abut against the abutting surface.

3. The toilet brush with self-locking function according to claim 1, characterized in that: The push rod is provided with a linkage groove extending along its axial direction. The inner side of the slider is fixed with a drive component that extends into the linkage groove; The drive component and the linkage groove have a set fitting clearance in the axial direction of the push rod, so that the slide button has a preset free stroke relative to the push rod; When the slider is pushed, during the idle stroke, the extrusion protrusion extrudes the limiting spring to disengage it from the self-locking state, at which time the push rod remains stationary; when the idle stroke ends, after the drive member contacts the end of the linkage groove, the slider drives the push rod to move synchronously through the drive member.

4. The toilet brush with self-locking function according to claim 3, characterized in that: The handle is also equipped with an elastic sliding button reset component. The two ends of the sliding button reset component are fixedly connected to the sliding button and the handle, respectively. The sliding button reset component applies an elastic force to reset the sliding button.

5. The toilet brush with self-locking function according to claim 1, characterized in that: The end of the handle is provided with a receiving groove for accommodating the chuck, the chuck is equipped with an elastic element to open the chuck, and the push rod can operably drive the chuck to switch between an extended state and a retracted state. When the chuck is in the retracted state, the inner wall of the receiving groove circumferentially constrains the chuck, keeping the chuck clamping the brush head. When the chuck switches to the extended state, the chuck is at least partially released from the constraint of the inner wall of the receiving groove and opens radially under the action of the elastic element, so that the brush head can be removed or installed.

6. The toilet brush with self-locking function according to claim 5, characterized in that: The outer wall of the chuck includes a contact section that can contact the receiving groove and a non-contact section that does not contact the receiving groove. The contact section is located at the end of the chuck and protrudes outward. When the chuck is in the retracted state, the contact section contacts the inner wall of the receiving groove to constrain the chuck and keep it in a clamped state. When the contact section of the chuck extends fully to the outside of the receiving groove, the chuck is released from the constraint of the inner wall of the receiving groove and opens radially under the action of the elastic element.

7. The toilet brush with self-locking function according to claim 6, characterized in that: The outer wall of the chuck has an inwardly recessed arc-shaped transition section between the non-contact section and the contact section.

8. The toilet brush with self-locking function according to claim 5, characterized in that: The chuck includes two identical structures and sizes: a first chuck and a second chuck. Both the first chuck and the second chuck are provided with a rotating shaft and a shaft seat. The shaft seat protrudes and has a shaft hole for the rotating shaft to be inserted, so that the first chuck and the second chuck can close or open relative to each other. The end of the push rod is provided with a mounting hole for inserting a shaft seat.

9. The toilet brush with self-locking function according to claim 8, characterized in that: The end of the push rod is provided with a U-shaped groove that opens toward the chuck side. The tops of the first chuck and the second chuck are accommodated in the U-shaped groove, and the mounting hole is provided on the groove wall of the U-shaped groove.

10. The toilet brush with self-locking function according to claim 8, characterized in that: A first sleeve protrusion is provided between the first clamp and the second clamp, and the elastic element is a spring, with both ends of the spring sleeved on the first sleeve protrusion.

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